Cell Cycle
Mitosis
Cancer
Misbehaving Cells
Regulation
100
What are the sub phases of interphase and what happens in each?
G1- Grow S- Syntesis G2- Grow again
100
What are the four stages of mitosis
Prophase Metaphase Anaphase Telophase
100
What is cancer?
a disorder in which body cells lose the ability to control growth
100
What is the concern for skin cancer?
That it will spread to other parts of the body.
100
What is the name of proteins used to regulate the cell cycle?
cyclins
200
Which phase lasts the longest; interphase, mitosis, or cytokinesis?
Interphase
200
Discribe four things that happen during prophase
1. nuclear envelope disappears 2. chromosomes thicken and become visible 3. centrioles start to move to opposite ends 4. spindle fibers begin to form
200
Name 3 causes of cancer
environmental-chemicals: cigarettes, asbestos. nitrates, pesticides, radiation, viruses, obesity/poor diet, defected gene.
200
Name the two types of tumors
benign tumor, malignant tumor
200
What are two types of regulatory proteins
Internal regulators External regulators
300
What is the job of a check point?
A check point is a stop along the cell cycle to make sure there are no mutations
300
In what stage does sister chromotids separate?
Anaphase
300
Why are cancer cells different
Don’t respond to signals and divide uncontrollably.
300
Which type of tumor is cancerous
malignant
300
What external regulators stimulate the growth and division of cells during wound healing?
growth factors
400
Why do cells divide?
DNA overload efficiency of size
400
What is Cytokinesis
Cytokinesis- divids the cytoplasm for two identical cells
400
This is the study of cancer
Oncology
400
Cell suicide is known as?
apoptosis
400
What is the name of the check that takes place during mitosis? restriction point spindle assembly post replication
Spindle assembly
500
During which phase of the cell cycle would you expect the amount of DNA to change?
S phase
500
What is the result of Mitosis
A production of 2 new daughter cells that are identical to the parents cells
500
Cancer cells form a mass called what?
Tumor
500
A great number of cancer cells have a defect in something called p53. What does this refer to?
a gene
500
A normal gene which, when altered by mutation can contribute to cancer
Proto-onconogene
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